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>> Fears over the spread of Zika intensifying in Singapore on Thursday. As the number of confirmed cases rises to a 115, including the first instance of a pregnant woman catching the virus. Official's say, they've identified a new cluster of potential infections and plant to widen the areas where drains and buildings are being sprayed.

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The number of cases has risen sharply since Zika was first reported at the weekend. And authorities expect more people to test positive in the coming days. Expert say, with it's crowded neighborhoods, damp weather and hundreds of thousands of foreign workers, Singapore has the right conditions for the mosquito born disease to thrive.

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One major concern is the threat of it spreading across boarders. A worry that has now become reality with Malaysia confirming it's first case of the virus on Thursday. A woman who had recently traveled to Singapore. Also on Thursday, China's foreign ministry confirming that 21 of its nationals are among those who have caught Zika in Singapore.

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Countries including the US and Australia have issued travel warnings urging pregnant women to stay away from the city-state.